Ethan Samuel Slater (born June 2, 1992) is an American actor and singer. He played the character of SpongeBob SquarePants in the 2016 musical of the same name, for which he won a Drama Desk Award and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a742ddc11576378c29de09cb611c53e3976cd50c73e075a719740f6c2febe44. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d1eaa35-ef2d-4275-a2b9-3d83e4517dda.json and https://artists.proofprofile.net/proofs/artist/6d1eaa35-ef2d-4275-a2b9-3d83e4517dda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f930f84cb7e335b3b5d06a5a23947dc89ff9d45be2d8239c8d7955b0d952db. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2123202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b9460f84c3a4678f7b0a0781362deaf47aded3e18e7eedad0fb2d906ca4067. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2123207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8899411624af185e881cd45f39e2351502135fce8ece26be130392d026080d26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUG12407079.
SpongeBob SquarePants, The New Musical (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc79a4910c02bf034d835866e42ede3c35274063fed235029958402c6134eb9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91602688.
Assassins (The 2022 Off-Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9256fbc0cef5e5038030d573bacaf393ee02947e6619b35f98e5e7c0c8356cbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839016fb35667f71e91685a9f3930a90af453579f38fc08b0e51f7b0db643393. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1fac4fdbd46282a1f09b8959ed93435ff5fefa55069e36c4b04a4879db89db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b65e4a8179faee7ccccf4706a3ad3c14d3db9ea759e2ec95d5d59217f021156. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d5b762d6865bb98d4d1c87285b9088c83653c7aeac71dec3efa05eaa6cd5e2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6845c6117b75213bda3254e7ecd44228f00acd2ec3229f8df17f5bf301ee6c5e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMQYB2225011.